Add coveralls badge to README. Touches #325, #285 and powered by #337
Add coveralls badge to README. Touches #325, #285 and powered by #337

yarbelk/django-admin2,pydanny/django-admin2,andrewsmedina/django-admin2,yarbelk/django-admin2,hnakamur/django-admin2,andrewsmedina/django-admin2,pydanny/django-admin2,andrewsmedina/django-admin2,hnakamur/django-admin2